Self-lubricating device for drill bit of electric drill

Abstract

The utility model relates to the technical field of electric drill bit lubrication, in particular to an electric drill bit self-lubricating device. Comprising an electric drill chuck and a tapping drill bit, one end of the tapping drill bit is arranged in the electric drill chuck, a jacket is arranged below the electric drill chuck, the tapping drill bit is sleeved with the jacket, a lubricating oil tank is arranged on the peripheral wall of the jacket, a cavity for containing lubricating oil is formed between the outer wall of the jacket and the inner wall of the lubricating oil tank, and an oil injection hole is formed in the upper end of the lubricating oil tank. A plurality of oil outlet holes are formed in the lower part of the jacket; the clearance between the two adjacent bearing clamping jaws on the electric drill chuck in the prior art is matched with the clamping jaw, the lubricating oil tank is installed at the bottom of the electric drill chuck and rotates along with the electric drill chuck and the tapping drill bit, lubricating oil in the cavity falls to the rotating part of the tapping drill bit, manual lubricating oil smearing is not needed, and the working efficiency is improved. The working efficiency is improved, the situation that the tapping drill bit is damaged due to working errors is reduced, and the service life of the tapping drill bit is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drill bit lubrication, in particular to a self-lubricating device for an electric drill bit. Background Art

[0002] In the field of machinery, electric drills are often used in conjunction with drill bits to drill holes in steel plates. During the process of drilling holes in steel plates, the drill bit makes hard contact with the steel plate, which can easily damage the drill bit and shorten the service life of the drill bit. The drill bit drills for a long time, generating a high temperature between the two, which can easily lead to the generation of sparks. This is highly dangerous and inconvenient for manual operation, especially for drill bits used for tapping steel plates. Once damaged, it cannot be recovered and can only be discarded, which will increase processing costs. Therefore, lubrication of the drill bit is very important because it can reduce wear and friction, improve work efficiency and the service life of the drill bit, and prevent overheating and damage.

[0003] In the prior art, a common method for lubricating a drill bit is to apply lubricating oil to the cutting area of ​​the drill bit using a brush or fingers. The lubricating oil forms a thin film on the drill bit, indirectly reducing direct contact between metals, thereby reducing wear and friction. However, this method of applying lubricating oil requires constant monitoring of the drill bit to see if the lubricating oil is used up. As a result, the operator may fail to lubricate the drill bit in a timely manner, causing the drill bit to wear out during long-term operation, reducing work efficiency, and shortening the service life of the drill bit. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electric drill bit self-lubricating device for applying lubricating oil to the drill bit when used in conjunction with an electric drill chuck, and an installation method thereof.

[0005] In order to achieve the above technical objectives, the utility model proposes the following technical solutions: a self-lubricating device for an electric drill bit, comprising an electric drill chuck and a drill bit, one end of the drill bit being arranged in the electric drill chuck, the electric drill chuck comprising a chuck body, a clamping sleeve rotatably mounted on the outer periphery of the chuck body, and a plurality of load-bearing jaws arranged inside the chuck body and clamping the drill bit by rotating the clamping sleeve, a jacket being provided at the bottom of the electric drill chuck, the drill bit being sleeved in the jacket, a lubricating oil tank being provided on the outer peripheral wall of the jacket, a chamber for containing lubricating oil being formed between the outer wall of the jacket and the inner wall of the lubricating oil tank, an oil filling hole being provided at the upper end of the lubricating oil tank, a plurality of oil outlet holes being provided at the bottom of the jacket, a gap being provided between two adjacent load-bearing jaws, a claw matching the gap being provided in the gap, and the other end of the claw being fixedly connected to directly above the jacket.

[0006] Furthermore, an oil filling plug is provided on the oil filling hole, and the end of the oil filling plug is connected to the lubricating oil tank through a rope.

[0007] Furthermore, the overall shape of the lubricating oil tank is a tapered structure that is wide at the top and narrow at the bottom.

[0008] Furthermore, a spiral protrusion is provided on the inner wall of the lubricating oil tank.

[0009] Furthermore, the oil outlet hole is opened obliquely toward the drill bit.

[0010] Furthermore, the cross section of the clamping claw is an inverted triangle structure, and the material of the clamping claw is rubber.

[0011] Compared with the prior art, the beneficial effects produced by the present invention are: the present invention has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: the present invention utilizes the gap between the two adjacent load-bearing jaws on the prior art electric drill chuck to cooperate with the jaws, installs the lubricating oil tank at the bottom of the electric drill chuck, and rotates with the electric drill chuck and the drill bit, so that the lubricating oil in the chamber falls to the rotating part of the drill bit, without the need for manual application of lubricating oil, reducing the damage to the drill bit caused by work errors, and can effectively reduce the friction between the drill bit and the steel plate, reduce wear, improve work efficiency and the service life of the drill bit; by designing the overall shape of the lubricating oil tank into a tapered structure that is wide at the top and narrow at the bottom and the inclined oil outlet, it can effectively reduce the occurrence of the lubricating oil in the chamber being thrown out of the bottom of the chamber under the action of centrifugal force, thereby ensuring the smooth flow of lubricating oil in the oil outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 3 This is a schematic cross-sectional view of the electric drill chuck of the present utility model;

[0015] Figure 4 It is a structural schematic diagram of the lubricating oil tank of the utility model;

[0016] Figure 5 It is a schematic cross-sectional structural diagram of the lubricating oil tank of the present utility model.

[0017] In the figure, 1. electric drill chuck; 2. drill bit; 3. jacket; 4. lubricating oil tank; 5. oil filling hole; 6. oil outlet hole; 7. chuck body; 8. clamping sleeve; 9. chamber; 10. load-bearing jaw; 11. gap; 12. claw; 13. oil filling plug; 14. rope; 15. spiral protrusion; 16. steel plate. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0019] like Figure 1-5 As shown, the utility model provides a self-lubricating device for an electric drill bit, comprising an electric drill chuck 1 and a drill bit 2, one end of the drill bit 2 being arranged in the electric drill chuck 1, comprising an electric drill chuck 1 and a drill bit 2, one end of the drill bit 2 being arranged in the electric drill chuck 1, the electric drill chuck 1 comprising a chuck body 7, a clamping sleeve 8 rotatably mounted on the outer periphery of the chuck body 7, and a bearing jaw 10 arranged inside the chuck body 7 and clamping the drill bit 2 by rotating the clamping sleeve 8, the bearing jaw 10 having three bearing jaws 10, the three bearing jaws 10 forming a clamping gap for accommodating the drill bit 2, the bearing jaw 10 having a row of teeth on the radial outer side, the bearing jaw 10 being longitudinally movable in the chuck body 7, the inner wall of the clamping sleeve 8 being provided with an internal thread, and the three bearing jaws 10 can be simultaneously controlled in the chuck by twisting the clamping sleeve 8. The main body 7 extends or contracts to control the size of the clamping gap, thereby achieving clamping or loosening of the drill bit 2. At the same time, the size of the clamping gap changes, and the size of the gap 11 will also change accordingly; a jacket 3 is provided at the bottom of the electric drill chuck 1, and the drill bit 2 is sleeved in the jacket 3. A lubricating oil tank 4 is provided on the outer peripheral wall of the jacket 3, and a chamber for containing lubricating oil is formed between the outer wall of the jacket 3 and the inner wall of the lubricating oil tank 4. An oil filling hole 5 is provided at the upper end of the lubricating oil tank 4, and 3-5 oil outlet holes 6 are evenly provided around the lower part of the jacket 3. The oil outlet holes 6 are connected to the bottom of the chamber 9, and a gap 11 is provided between two adjacent load-bearing jaws 10. A claw 12 that matches the gap 11 is provided in the gap 11, and the other end of the claw 12 is fixedly connected to the top of the jacket 3.

[0020] like Figure 1-5 As shown, in this embodiment, the electric drill chuck 1 is a self-tightening chuck structure commonly used in the art, so the detailed structure of this part is not described in detail in this embodiment. The drill bit self-lubricating device designed by the utility model is designed on the basis of the structure of the electric drill chuck 1 of the prior art. One end of the drill bit 2 is clamped and fixed by the electric drill chuck 1, and the drill bit 2 is set in the jacket 3 and does not contact the jacket 3. The number of the bearing jaws 10 is three, so the number of the gaps 11 between the bearing jaws 10 and the chuck body 7 is also three, and the number of the jaws 12 is There are also three measures. In the process of twisting the clamping sleeve 8 to fix the drill bit 2, the gap 11 is reduced. When the load-bearing jaws 10 grasp the drill bit 2, the load-bearing jaws 10 also clamp the claws 12 at the same time. Therefore, when the electric drill is started, the lubricating oil tank 4 will rotate along the drill bit 2 and the electric drill chuck 1. At the same time, the lubricating oil in the lubricating oil tank 4 falls along the oil outlet 6 onto the outer wall of the drill bit 2, which has a good lubricating effect on the drill bit 2. There is no need to manually apply lubricating oil, which reduces the damage to the drill bit caused by work errors and increases the service life of the drill bit 2.

[0021] The oil filling hole 5 is provided with an oil filling plug 13 , and the end of the oil filling plug 13 is connected to the lubricating oil tank 4 via a rope 14 .

[0022] like Figure 4 As shown, the oil filling plug 13 can prevent the lubricating oil in the lubricating oil tank 4 from generating centrifugal force when the lubricating oil tank 4 rotates, causing the lubricating oil to leak out of the oil filling hole 5. The oil filling plug 13 is limited in its moving position by the rope 14 to avoid the oil filling plug 13 from being lost.

[0023] The overall shape of the lubricating oil tank 4 is a tapered structure that is wide at the top and narrow at the bottom.

[0024] like Figure 1 and Figure 4 As shown, a conical chamber 9 is formed between the conical lubricating oil tank 4 and the jacket 3. The lubricating oil in the chamber 9 will generate centrifugal force when the lubricating oil tank 4 rotates. The conical chamber 9 can reduce the probability of the lubricating oil being thrown away from the bottom of the chamber 9 under the action of centrifugal force, thereby ensuring that the lubricating oil can be discharged normally along the oil outlet 6.

[0025] A spiral protrusion 15 is provided on the inner wall of the lubricating oil tank 4 .

[0026] like Figure 5 As shown, the lubricating oil in the lubricating oil tank 4 generates centrifugal force when the lubricating oil tank 4 rotates, which increases the possibility of the lubricating oil leaking out of the oil filling hole 5. The spiral protrusion 15 can reduce the possibility of the lubricating oil flowing out of the oil filling hole 5 along the inner wall of the lubricating oil tank 4.

[0027] The oil outlet hole 6 is opened obliquely toward the drill bit 2 .

[0028] like Figure 5 As shown, the oil outlet hole 6 is inclined toward the drill bit 2, which can effectively help the lubricating oil to flow out quickly.

[0029] The cross section of the clamping claw 12 is an inverted triangle structure, and the clamping claw 12 is made of rubber.

[0030] like Figure 2 As shown, rubber has a certain elasticity, so after the rubber claw 12 is inserted into the gap 11 , the load-bearing clamping jaw 10 can clamp the drill bit 2 while better fixing the claw 12 .

[0031] The installation method of the electric drill bit self-lubricating device is as follows: first, the drill bit 2 is sleeved in the jacket 3, and one end of the drill bit 2 is inserted into the installation gap between the three load-bearing clamping jaws 10, and the clamping jaw 12 is inserted into the gap 11 between two adjacent load-bearing clamping jaws 10; then, the clamping sleeve 8 is screwed to narrow the gap 11 between the two adjacent load-bearing clamping jaws 10. The clamping jaw 12 is made of elastic rubber material, so the clamping jaw 12 is pressed by the load-bearing clamping jaws 10 on both sides of the gap 11 in the gap 11. At the same time, the three load-bearing clamping jaws 10 clamp the drill bit 2, and because the clamping jaw 12 is elastic, it can effectively prevent the load-bearing clamping jaws 10 from being loose. The problem of drill bit 2 occurs; then lubricating oil is injected into the oil filling hole 5, and the oil filling plug 13 is plugged; finally, the steel plate 16 is limited to the bottom of the drill bit 2, and the electric drill is started. The electric drill chuck 1 rotates, driving the drill bit 2 and the lubricating oil tank 4 to rotate at the same time, and the lubricating oil flows along the oil outlet 6 to the drill bit 2. According to the fluid dynamics effect, the centrifugal force generated when the drill bit 2 rotates helps to disperse the lubricating oil to the cutting area of ​​the drill bit 2, forming an oil film. The lubricating oil flowing onto the drill bit 2 will not splash out. The oil film can reduce wear and friction, improve work efficiency and the service life of the drill bit, and prevent overheating and damage.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A self-lubricating device for an electric drill bit, comprising an electric drill chuck (1) and a drill bit (2), one end of the drill bit (2) being arranged in the electric drill chuck (1), the electric drill chuck (1) comprising a chuck body (7), a clamping sleeve (8) rotatably mounted on the outer periphery of the chuck body (7), and a plurality of load-bearing clamping jaws (10) arranged in the chuck body (7) and clamping the drill bit (2) by rotating the clamping sleeve (8), characterized in that: A jacket (3) is provided below the electric drill chuck (1), and the drill bit (2) is sleeved in the jacket (3). A lubricating oil tank (4) is provided on the outer peripheral wall of the jacket (3). A chamber (9) for containing lubricating oil is formed between the outer wall of the jacket (3) and the inner wall of the lubricating oil tank (4). An oil filling hole (5) is provided at the upper end of the lubricating oil tank (4), and a plurality of oil outlet holes (6) are provided below the jacket (3). A gap (11) is provided between two adjacent load-bearing jaws (10), and a claw (12) matching the gap (11) is provided in each gap (11). The other end of the claw (12) is fixedly connected to the top of the jacket (3).

2. The self-lubricating device for an electric drill bit according to claim 1, characterized in that: An oil filling plug (13) is provided on the oil filling hole (5), and an end of the oil filling plug (13) is connected to the lubricating oil tank (4) via a cord (14).

3. The self-lubricating device for an electric drill bit according to claim 1, characterized in that: The overall shape of the lubricating oil tank (4) is a tapered structure that is wide at the top and narrow at the bottom.

4. The self-lubricating device for an electric drill bit according to claim 1, characterized in that: A spiral protrusion (15) is provided on the inner wall of the lubricating oil tank (4).

5. The self-lubricating device for an electric drill bit according to claim 1, characterized in that: The oil outlet hole (6) is opened obliquely in the direction of the drill bit (2).

6. The self-lubricating device for an electric drill bit according to claim 1, characterized in that: The cross section of the clamping claw (12) is an inverted triangle structure, and the clamping claw (12) is made of rubber.

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